CN214301209U

CN214301209U - Arch bridge with transversely stretched tie rod rope

Info

Publication number: CN214301209U
Application number: CN202023314880.XU
Authority: CN
Inventors: 赖亚平; 邓文中; 杨丁; 陈家勇
Original assignee: TYLin International Engineering Consulting China Co ltd
Current assignee: TYLin International Engineering Consulting China Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-28
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses an arch bridge for transversely stretching tie rods and cables, which comprises a main arch, a main beam and tie rods and cables, wherein the two ends of the tie rods and the two ends of the main arch are respectively anchored correspondingly, transverse stretching components for applying transverse stretching force to the tie rods and the cables are distributed along the length direction, and the acting point of the transverse stretching components is positioned on the main beam; the utility model actively stretches and adjusts the cable force of the tie rod cable, thereby forming the longitudinal tension force of the tie rod cable, and overcoming the problems of insufficient tensioning space of the tie rod cable tensioned at the end part of the arch support or inside the arch support and too large equipment specifications such as required jacks and the like; the transverse tension force is applied through a plurality of groups of tensioning assemblies, and the longitudinal tension force of the tie rod cable can be effectively adjusted by applying smaller transverse tension force to each group of tensioning assemblies, so that the tie rod cable can be tensioned and the cable force can be adjusted flexibly at low cost; and a uniform and ordered but variable structure can be formed among all the transverse tensioning assemblies, the curve plane line shape of the lashing rod cable corresponds to the inward-inclined arch rib, the form is novel, and the appearance is attractive.

Description

Arch bridge with transversely stretched tie rod rope

Technical Field

The utility model relates to a civil engineering field, in particular to tie rod arch bridge structure.

Background

The tied arch bridge is a structural system for balancing horizontal thrust of arch ribs by using tied cables, and is widely applied by virtue of the advantages of attractive appearance, large spanning capability, strong adaptability to basic conditions and the like.

In the prior art, a tie bar cable tensioning solution of a tie bar arch bridge generally adopts a jack to tension anchor points at two ends of a tie bar cable. However, as the span of the through tied arch bridge is increased, the cable force of the tied rope and the corresponding specification need to be increased sufficiently to balance the thrust of the arch. When the cable force of the tie-rod cable and the corresponding specification exceed the conventional specification, a very huge jack needs to be developed or one tie-rod cable needs to be changed into a plurality of tie-rod cables to achieve the expected purpose. A special jack for achieving a very large tensile force is costly and limited by the conditions of the anchoring point, the required working space of the jack is also large and the operating space is limited. In addition, one tie rod cable is changed into a multi-root system tie rod cable, stress can be dispersed, and tensile force can be reduced, but the problems that the stress of the tie rod cable is uneven, the anchoring structure of the tie rod cable is complex, and a larger anchoring space is needed exist.

Therefore, a method for processing the tied cables of the tied arch bridge is needed, which can ensure that a larger tension force is formed, is suitable for the tied arch bridge with a larger span, does not occupy a larger tension space in the tension process, does not need special large-tonnage jacks and other tension equipment, saves the manufacturing cost and improves the working efficiency.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an arch bridge of horizontal stretch-draw tie rod cable can guarantee to form great pulling force, is adapted to the tie rod arch bridge that the span is great, does not occupy great tensioning space and does not need special tensioning equipment such as large-tonnage jack among the tensioning process, practices thrift the cost and improves work efficiency.

The utility model discloses an arched bridge of horizontal stretch-draw tie rod cable, correspond the tie rod cable of anchor respectively including main arch, girder and both ends and the both ends of main arch, the tie rod cable distributes along length direction has the horizontal stretch-draw subassembly of exerting horizontal tension force to it, the impetus of horizontal stretch-draw subassembly is located the girder.

Further, the tie rod cables are arranged on two sides of the main beam in a transversely symmetrical mode, the transverse tensioning assemblies are distributed on the tie rod cables in a uniformly distributed mode, and the plane line of the tie rod cables to which the transverse tensioning force is applied is a smooth curve bending to the center line of the main beam.

Further, the transverse tensioning assembly comprises a transverse tensioning rod, one end of the transverse tensioning rod is fixedly connected with a tie rod cable, and the other end of the transverse tensioning rod is fixed at a set position of the main beam after tensioning is completed.

Further, horizontal stretch-draw subassembly still including be fixed in the stretch-draw outer tube of girder and the stretch-draw inner tube of endotheca in the stretch-draw outer tube, horizontal stretch-draw pole one end is through stretch-draw inner tube fixed connection the tie rod cable, the other end passes stretch-draw outer tube and stretch-draw accomplish the back and be fixed in the settlement position of girder.

Furthermore, the transverse tensioning assembly further comprises an inclined strut, one end of the inclined strut is fixed at a set position of the main beam, and the other end of the inclined strut is obliquely and upwards fixed on the outer sleeve and supports the outer sleeve.

Furthermore, the main arch comprises two arch ribs which are transversely arranged in parallel, and the two tie rods are arranged corresponding to the two arch ribs and are respectively anchored on the arch seats at the two ends of the corresponding arch ribs.

Further, two fixed a plurality of stull that set up along length direction equipartition between the arch rib, and two be fixed with the hunch seat crossbeam between the hunch seat of the same tip of arch rib, the girder width is less than two transverse distance between the hunch seat of the same tip of arch rib.

Further, the main beam is a box beam, and transverse clapboards are longitudinally distributed in the box beam; each transverse tensioning assembly is provided with two transverse tensioning rods which are respectively arranged at two sides of the corresponding diaphragm plate and are respectively fixed at two sides of the diaphragm plate after tensioning is finished; the tensioning outer sleeve is fixed on the web plate on the corresponding side of the box girder and is positioned on the diaphragm plate; the transverse tension rod is positioned between the two pressure bearing vertical plates and penetrates through the pressure bearing transverse plate to complete tensioning and fixing.

Furthermore, the two arch ribs incline towards the center line of the main beam respectively.

Furthermore, the tensioning inner sleeve is fixed on the corresponding tie bar cable through a fixing cable clamp, and after tensioning is completed, the tensioning outer sleeve and the tensioning inner sleeve are fixed in the length direction.

The utility model has the advantages that: the arch bridge of the transverse tensioning tie rod cable of the utility model actively transversely stretches and adjusts the cable force of the tie rod cable, thereby forming the longitudinal tensioning force of the tie rod cable, and overcoming the problems of insufficient tensioning space of the tie rod cable tensioning at the end part of an arch support or inside, too large equipment specifications such as a required jack and the like; the transverse tension force is applied through a plurality of groups of tensioning assemblies, and the longitudinal tension force of the tie rod cable can be effectively adjusted by applying smaller transverse tension force to each group of tensioning assemblies, so that the tie rod cable can be tensioned and the cable force can be adjusted flexibly at low cost; the components of the tensioning assembly only need to adopt light rods because the tensioning force applied by each group is small, can be manufactured in a factory, are transported to the site and are fixed with the set part of the main beam after tensioning is finished; the rod piece is small in size, small in welding workload, fast and convenient to install and low in cost; because the transverse tensioning assembly connects the main beam with the tie bar cable to form a new statically determinate structure, the transverse rigidity of the main beam is obviously increased and the transverse amplitude is reduced under the condition that the width of a bridge deck and the material consumption of the main beam are not required to be increased; and a uniform and ordered but variable structure can be formed among all the transverse tensioning assemblies, the curve plane line shape of the lashing rod cable corresponds to the inward-inclined arch rib, the form is novel, and the appearance is attractive.

Drawings

The invention is further described with reference to the following figures and examples.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a side view (end portion) of fig. 1.

FIG. 3 is an enlarged schematic view of a lateral tensioning assembly.

FIG. 4 is an enlarged schematic view (in another orientation) of the lateral tensioning assembly.

FIG. 5 is an exploded view of the lateral tensioning assembly.

Detailed Description

Fig. 1 is a schematic structural diagram of the present invention, as shown in the figure: the arch bridge for transversely tensioning the tie rod cable comprises a main arch 1, a main beam 6 and tie rod cables 7, wherein two ends of the tie rod cables 7 are correspondingly anchored with two ends of the main arch respectively, transverse tensioning assemblies for applying transverse tensioning force to the tie rod cables 7 are distributed along the length direction of the tie rod cables 7, and acting points of the transverse tensioning assemblies are located on the main beam 6;

the transverse tensioning assembly refers to all equipment capable of transversely tensioning the tie bar cables 7, and the acting point of the main beam is that fixed transverse force of the transverse limiting tensioning assembly is exerted on the main beam in the process of tensioning the tie bar cables and after tensioning; the structure can be various, for example, one end of a tension rod (cable) is fixed on a tie rod cable, and the other end is fixed on the main beam 6 after being tensioned; the tensioning method (tensioning component) can be that a tensioning rod (cable) passes through the main beam to apply tension by a jack, or tensioning can be performed by a thread pair, in a word, a mechanical structure capable of realizing transverse tensioning can be used for the utility model; of course, a transverse tensioning structure is adopted, and the tie bar cable 7 is required to be a flexible cable, which is not described again;

the complete arch bridge also comprises a sling 5, a pier and the like, which are not described again; one end of a main arch of the tied arch bridge is fixed on a pier through a fixed support 12, and the other end of the main arch of the tied arch bridge is supported on the other pier through a movable support 13, which belongs to the common structure of the tied arch bridge and is not described again; the utility model discloses in, whole structure utilizes the main pressurized of encircleing, and tie rod cable 7 is drawn and is formed the self-balancing atress system, through set up fixing support 12 under the main arch end, sets up vertical movable support 13 under another end, sets up tie rod cable 7 between the main arch both ends, and the horizontal thrust that the main arch 1 produced is undertaken by tie rod cable 7 that can adjust the cable force completely, and the girder only bears the moment of flexure and does not bear axial tension.

In this embodiment, the tie-rod cables 7 are two tie-rod cables which are symmetrically arranged on two sides of the main beam 6 in the transverse direction and are distributed with the transverse tensioning assemblies, and the planar line of the tie-rod cables to which the transverse tensioning force is applied is a smooth curve which is bent towards the central line of the main beam; as shown in the figure, two tie rod cables 7 positioned at two sides of the main beam 6 are applied with relatively uniform transverse tension forces in the length direction, and the transverse tension forces are converted into longitudinal tension forces of the tie rod cables, so that the effects of eliminating the horizontal component force of the main arch and the horizontal force of the main beam are achieved; and the curved smooth curve formed after tensioning is suitable for distribution of stress conditions, so that good stress of the whole lashing rod cable is ensured;

in this embodiment, the transverse tensioning assembly includes a transverse tensioning rod 11, one end of the transverse tensioning rod 11 is fixedly connected with the tie rod cable 7, and the other end of the transverse tensioning rod is fixed at a set position of the main beam 6 after tensioning is completed, and the set position is different according to different structures of the main beam 6; the mode that one end of the transverse tension rod 11 is fixed on the tie rod cable 7 can adopt any mechanical connection mode which is suitable for fixing the component in the prior art, and in order to ensure the stress effect, the mode of an annular hoop is generally adopted, and the description is omitted; the other end of the main beam 6 can be fixed in a plurality of structures, namely, the main beam can be detachably fixed, so that the later tension force can be conveniently adjusted; for example, the main beam 6 is a concrete beam, the transverse tension rod can pass through the main beam and complete tension on the other side to form detachable anchoring, so that later adjustment is facilitated; if the beam is a steel box beam, a support lug can be arranged in the steel box, and the transverse tension rod and the support lug form detachable fixation, and the like; of course, the fixing can also be directly welded, so that the structural stability is ensured.

In this embodiment, the transverse tensioning assembly further includes a tensioning outer sleeve 81 fixed to the main beam and a tensioning inner sleeve 82 sleeved in the tensioning outer sleeve 81, one end of the transverse tensioning rod 11 is fixedly connected to the tie rod cable 7 through the tensioning inner sleeve 82, and the other end of the transverse tensioning rod passes through the tensioning outer sleeve 81 and is fixed to a set position of the main beam 6 after tensioning is completed; as shown in the figure, the transverse tension rod 11 is fixed to the tension inner sleeve 82 through a mechanical connection structure such as a pin lug, and the tension inner sleeve 82 is fixedly connected to an annular clamp through a mechanical connection mode (generally welding) such as a bolt, and the annular clamp is of a split structure and clamped on the outer circle of the tie rod cable to form a series of fixed connections and can be set to be detachable, so that replacement and maintenance are facilitated; as shown in the figure, the inner sleeve of the inner tensioning sleeve 82 capable of axially sliding is arranged on the outer tensioning sleeve, in the tensioning process, the outer tensioning sleeve and the inner tensioning sleeve shorten and slide along the length direction under the action of the transverse tensioning rod, and after the transverse tensioning rod 11 is tensioned to a set position of the main beam 6, the outer tensioning sleeve 81 and the inner tensioning sleeve 82 form effective support for the transverse tensioning rod 11, so that the overall strength of the whole transverse tensioning assembly is improved; in the process of tensioning, the tie rod cable 7 deforms along with the axial movement of the transverse tension rod 11, when the tension of the transverse tension rod 11 and the line type of the tie rod cable 7 meet the design requirements, the cable force of the tie rod cable 7 can be easily calculated, and at the moment, the relative positions of the tensioning outer sleeve and the tensioning inner sleeve can be locked in a welding or detachable mode, so that the total length is limited.

As shown in the figure, the tensioning outer sleeve 81 and the tensioning inner sleeve 82 are both of hollow square steel structures, and have the capacity of bearing large torque, so that the integral bearing capacity of the system is ensured.

In this embodiment, the transverse tensioning assembly further includes a diagonal brace 9, one end of the diagonal brace 9 is fixed to a set position of the main beam 6, and the other end of the diagonal brace 9 is obliquely and upwardly fixed to and supports the outer sleeve 81; as shown in the figure, in the structure, a stable triangular support is formed between the inclined strut 9 and the tensioning outer sleeve 81, so that the bearing capacity of the whole transverse tensioning assembly is ensured, and the integral stability of the structure is ensured.

In this embodiment, the main arch 1 includes two arch ribs arranged in parallel, and the two tie rods 7 are arranged corresponding to the two arch ribs and anchored to the arch bases 3 at two ends of the corresponding arch ribs respectively; as shown in the figure, a main arch is formed by a double-arch rib structure, so that the coordination of the bearing relation between the main arch and the respective tie bar cables is facilitated, and the coordination stress of the whole structure is ensured; as shown in the figure, two ends of the tie bar cable 7 are respectively anchored on the arch seats 3 at two ends of the same arch rib, and the main beam is positioned at the lower part of the main arch and is basically horizontal to the tie bar cable 7 to form a through type tie bar bridge, so that the whole structure is complete and attractive, and the bearing effect is good; certainly, do not exclude the bridge other than the formula of holding down and adopt the utility model discloses a horizontal stretch-draw tie rod cable structure, for example well formula bridge of holding, use this structure also can produce similar technological effect, no longer describe herein.

In the embodiment, a plurality of cross braces 2 are uniformly and fixedly arranged between the two arch ribs along the length direction, an arch base cross beam 4 is fixed between the arch bases 3 at the same end parts of the two arch ribs, and the width of the main beam 6 is smaller than the transverse distance between the arch bases 3 at the same end parts of the two arch ribs; as shown in the figure, the cross brace 2 is made into an X shape, and both ends of the cross brace are fixed with the corresponding arch ribs to form a triangular force bearing structure, so that the force bearing capacity is improved, and the arrangement of the cross brace is also beneficial to improving the force bearing coordination of the double-arch rib main arch; as shown, the main beam is positioned between the two arch seats 3 at the same end of the arch rib, which is beneficial to the arrangement of the lashing wire 7, so that the appearance, coordination and integrity of the whole structure are better.

In this embodiment, the main beam 6 is a box beam, the transverse partition plates 601 are longitudinally distributed in the box beam, and the transverse partition plates 601 belong to a reinforcing structure arranged in the box beam, are conventional and are not described herein again; each transverse tensioning assembly is provided with two transverse tensioning rods which are respectively arranged at two sides of the corresponding diaphragm plate and are respectively fixed at two sides of the diaphragm plate after tensioning is finished; the tensioning outer sleeve is fixed on the web plate on the corresponding side of the box girder and is positioned on the diaphragm plate; the tension device is characterized by further comprising a pressure-bearing assembly 14 corresponding to the transverse tension rod, wherein the pressure-bearing assembly 14 comprises two pressure-bearing vertical plates which are fixed to the main beam along the tension direction and are arranged in parallel and a pressure-bearing transverse plate which is fixedly connected to the two pressure-bearing vertical plates, and the transverse tension rod is located between the two pressure-bearing vertical plates 1401 and penetrates through the pressure-bearing transverse plate 1402; as shown in the figure, the pressure-bearing vertical plate is arranged transversely (in the tensioning direction) along the main beam, and the pressure-bearing vertical plate can be directly welded on the inner side of the web (in the box girder), or can be welded on the inner side of the web and the corresponding side surface of the diaphragm plate, the pressure-bearing horizontal plate and the pressure-bearing vertical plate are generally welded and fixed, or can be welded on the side surface of the diaphragm plate, so that the fixing strength is ensured, which is not described herein again; the transverse tension rod 11 penetrates through the pressure-bearing transverse plate 1402 and is fixed through a nut, tension can be directly formed through rotating the nut in the tension process, and after the tension is finished, the transverse tension rod is fixedly welded or locked, and details are not repeated;

as shown in the figure, the two transverse tension rods are respectively arranged at two sides of the corresponding diaphragm plate, so that the stress of the diaphragm plate is relatively balanced, and the offset distance is avoided; meanwhile, the position of the stretching outer sleeve fixed on the web is positioned at the diaphragm plate, so that the stress effect is further ensured, and the integral stability of the structure is facilitated; as shown in the figure, two horizontal tensioning rods 11 are all located inside the tensioning outer sleeve, penetrate through the web plate of the main beam 6 and are symmetrically arranged along two sides of the horizontal partition plate of the main beam 6, and the horizontal tensioning rods 11 are anchored on the pressure-bearing assembly through bolts, and the other ends of the horizontal tensioning rods are connected with the tensioning inner sleeve through pin lugs.

In this embodiment, the two arch ribs are respectively inclined towards the center line of the main beam 6, as shown in fig. 2, the two arch ribs are inclined upwards and inwards to form a support similar to a triangular structure, and the support has better stability.

In this embodiment, the tensioning inner sleeves 82 are fixed to the corresponding tie bars 7 by the fixing cable clips 10, and after tensioning is completed, the tensioning outer sleeves 81 and the tensioning inner sleeves 82 are fixed in the length direction to lock the overall length; as shown in the figure, the fixed cable clamp 10 is a two-half ring structure, wherein one half ring and the tensioning inner sleeve are welded into a whole, the two half rings and the other half ring form a clamp clamped on the excircle of the tie rod cable, and the two half rings are connected through a bolt, which belongs to the existing mechanical connection structure and is not described herein again; after tensioning is finished, the tensioning outer sleeve and the tensioning inner sleeve are fixed along the length direction, and bear later-stage transverse tensioning force together with the transverse tensioning rod 11, so that the stability of the structure is ensured; the fixed mode can be detachable, for example pin isotructure, also can be welded fastening, and is fixed reliable, but later stage can't adjust.

In the structure, the tie rod cables 7 and the transverse tensioning assemblies (including the transverse tensioning rods 11, the tensioning inner sleeves 82, the tensioning outer sleeves 81, the inclined support rods 9 and the fixed cable clamps 10) jointly form transverse limiting constraints of a plurality of nodes on the main beam 6. When the main beam 6 is displaced transversely under the action of external load, the tight tie rod cables 7 provide a rebound force opposite to the displacement direction of the main beam 6 so as to limit the transverse deformation of the main beam 6, thereby obviously increasing the transverse rigidity of the main beam and reducing the transverse amplitude.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. An arch bridge of horizontal stretch-draw tie rod cable which characterized in that: the main arch comprises a main arch, a main beam and a tie rod cable, wherein two ends of the tie rod cable are correspondingly anchored with two ends of the main arch respectively, a transverse tensioning assembly for applying transverse tensioning force to the tie rod cable is distributed along the length direction of the tie rod cable, and the acting point of the transverse tensioning assembly is positioned on the main beam.

2. The arch bridge of laterally tensioned lashing wire of claim 1, wherein: the tie rod cables are arranged on two sides of the main beam in a transverse symmetrical mode, the transverse tensioning assemblies are distributed on the tie rod cables in a distributed mode, and the plane line of the tie rod cables to which the transverse tensioning force is applied is a smooth curve bending to the center line of the main beam.

3. The arch bridge of laterally tensioned lashing wire of claim 2, wherein: the transverse tensioning assembly comprises a transverse tensioning rod, one end of the transverse tensioning rod is fixedly connected with a tie rod cable, and the other end of the transverse tensioning rod is fixed at a set position of the main beam after tensioning is completed.

4. The arch bridge of laterally tensioned lashing wire of claim 3, wherein: the transverse tensioning assembly further comprises a tensioning outer sleeve fixed on the main beam and a tensioning inner sleeve sleeved on the tensioning outer sleeve, one end of the transverse tensioning rod is fixedly connected with the tie rod cable through the tensioning inner sleeve, and the other end of the transverse tensioning rod penetrates through the tensioning outer sleeve and is fixed at a set position of the main beam after tensioning is completed.

5. The arch bridge of laterally tensioned lashing wire of claim 4, wherein: the transverse tensioning assembly further comprises an inclined strut, one end of the inclined strut is fixed at a set position of the main beam, and the other end of the inclined strut is obliquely and upwards fixed on the outer sleeve and supports the outer sleeve.

6. The arch bridge of laterally tensioned lashing wire of claim 2, wherein: the main arch comprises two arch ribs which are transversely arranged in parallel, and the two tie rods are arranged corresponding to the two arch ribs and are respectively anchored on the arch bases at the two ends of the corresponding arch ribs.

7. The arch bridge of laterally tensioned lashing wire of claim 6, wherein: two fixed a plurality of stull that set up along length direction equipartition between the arch rib, and two be fixed with the hunch seat crossbeam between the hunch seat of the same tip of arch rib, the girder width is less than two transverse distance between the hunch seat of the same tip of arch rib.

8. The arch bridge of laterally tensioned lashing wire of claim 4, wherein: the main beam is a box beam, and transverse clapboards are longitudinally distributed in the box beam; each transverse tensioning assembly is provided with two transverse tensioning rods which are respectively arranged at two sides of the corresponding transverse partition plate; the tensioning outer sleeve is fixed on the web plate on the corresponding side of the box girder and is positioned on the diaphragm plate;

the transverse tension rod is positioned between the two pressure bearing vertical plates and penetrates through the pressure bearing transverse plate to complete tensioning and fixing.

9. The arch bridge of laterally tensioned lashing wire of claim 6, wherein: the two arch ribs incline towards the central line of the main beam respectively.

10. The arch bridge of laterally tensioned lashing wire of claim 4, wherein: the tensioning inner sleeve is fixed on the corresponding tie bar cable through a fixing cable clamp, and after tensioning is completed, the tensioning outer sleeve and the tensioning inner sleeve are fixed in the length direction.